//options也可以注入到service中
//IOptionsSnapshot 类似IOptionsMonitor
//https://andrewlock.net/using-multiple-instances-of-strongly-typed-settings-with-named-options-in-net-core-2-x/
//https://andrewlock.net/creating-singleton-named-options-with-ioptionsmonitor/
public MyServiceSingleton(IOptionsSnapshot <SlackApiSettings> options)
{
/*
* IOptionsSnapshot和IOptionsMonitor的区别
* IOptionsMonitor<T> is a bit like IOptions<T> in some ways and IOptionsSnapshot<T> in others:
* It's registered as a Singleton (like IOptions<T>)
* It contains a CurrentValue property that gets the default strongly-typed settings object
* as a Singleton (like IOptions<T>.Value)
* It has a Get(name) method for returning named options (like IOptionsSnapshot<T>).
* Unlike IOptionsSnapshot<T>, these named options are Singletons.
* Responds to changes in the underlying IConfiguration object by re-binding options.
* Note this only happens when the configuration changes (not every request like IOptionsSnapshot<T> does).
* IOptionsMonitor<T> is itself a Singleton, and it caches both the default and named options for the lifetime of the app. However, if the underlying IConfiguration that the options are bound to changes, IOptionsMonitor<T> will throw away the old values, and rebuild the strongly-typed settings. You can register to be informed about those changes with the OnChange(listener) method, but I won't go into that in this post.
*/
_devSettings = options.Get("Dev");
_generalSettings = options.Get("General");
_publicSettings = options.Get("Public");
}
public ValuesController(IOptionsSnapshot <SlackApiSettings> options)
{
_devSettings = options.Get("Dev");
_generalSettings = options.Get("General");
_publicSettings = options.Get("Public");
}
public SlackApiSettingsController(SlackApiSettings settings)
{
_slackApiSettings = settings;
}
